In 2770, Smaug drove the Dwarves out of Erebor and many ravens left also, but Carc and his wife remained.
Roäc’s father, Carc, built his home with other ravens above a guard-post that Dwarves had inhabited before being driven out by Smaug, giving the location the name of Ravenhill. Roäc was of a family/community of ravens living near Erebor that had a longstanding alliance with the Dwarves of that area.
